The profile errors of conjugate disk cams can be indirectly examined by means of measuring the conjugate condition of the assembled conjugate cam mechanism. This paper demonstrates how to measure the conjugate condition of the assembled conjugate cam mechanism to reveal the cam profile errors and also develops an analytical approach for relating the variation of the conjugate condition with the cam profile errors. For the machined conjugate cams with profile errors, if the subtending angle of the oscillating follower arms is intentionally changed to be variable, the variation of the subtending angle of the follower arms may indicate the variation of profile errors when the cams rotate. According to the magnitude of the subtending angle variation, the profile deviations of conjugate disk cams can be analyzed analytically. The profile errors of a pair of conjugate cams can be evaluated by means of the corresponding motion variation of the indicator reading. For such an examining method, the only required measuring instrument is a dial indicator. A pair of conjugate cams were examined by the method and also measured using a coordinate measuring machine to test the accuracy and efficiency of the method.
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e-mail: wtchang@webmail.pme.nthu.edu.tw
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Research Papers
A Simplified Method for Examining Profile Deviations of Conjugate Disk Cams
Wen-Tung Chang,
Wen-Tung Chang
Department of Power Mechanical Engineering,
e-mail: wtchang@webmail.pme.nthu.edu.tw
National Tsing Hua University
, Hsinchu 30013, Taiwan
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Long-Iong Wu
Long-Iong Wu
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
Search for other works by this author on:
Wen-Tung Chang
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwane-mail: wtchang@webmail.pme.nthu.edu.tw
Long-Iong Wu
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, TaiwanJ. Mech. Des. May 2008, 130(5): 052601 (11 pages)
Published Online: March 25, 2008
Article history
Received:
December 8, 2006
Revised:
August 29, 2007
Published:
March 25, 2008
Citation
Chang, W., and Wu, L. (March 25, 2008). "A Simplified Method for Examining Profile Deviations of Conjugate Disk Cams." ASME. J. Mech. Des. May 2008; 130(5): 052601. https://doi.org/10.1115/1.2885191
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